﻿<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>欢迎登录后台管理系统</title>
<link href="css/style.css" rel="stylesheet" type="text/css" />
<script language="JavaScript" src="js/jquery.js"></script>
<script src="js/cloud.js" type="text/javascript"></script>


<script language="javascript">
	$(function(){
    $('.loginbox').css({'position':'absolute','left':($(window).width()-692)/2});
	$(window).resize(function(){  
    $('.loginbox').css({'position':'absolute','left':($(window).width()-692)/2});
    })  
});  
</script> 


</head>

<body style="background-color:#1c77ac; background-image:url(images/light.png); background-repeat:no-repeat; background-position:center top; overflow:hidden;">



    <div id="mainBody">
      <div id="cloud1" class="cloud"></div>
      <div id="cloud2" class="cloud"></div>
    </div>  


<div class="logintop">    
    <span>欢迎登录后台管理界面平台</span>    
    <ul>
    <li><a href="#">回首页</a></li>
    <li><a href="#">帮助</a></li>
    <li><a href="#">关于</a></li>
    </ul>    
    </div>
    
    <div class="loginbody">
    
    <span class="systemlogo"></span> 
       
    <div class="loginbox">
    
    <ul>
    <li><input name="" type="text" class="loginuser" value="" id="account"/></li>
    <li><input name="" type="password" class="loginpwd" value="密码" id="password"/></li>
    <li><input name="" type="button" class="loginbtn" value="登录"  onclick="subLogin()"  />
            <span id="tip" style="color:red"></span>

         </li>
     </ul>


     </div>

     </div>



     <div class="loginbm">版权所有  2013  <a href="http://www.uimaker.com">uimaker.com</a>  仅供学习交流，勿用于任何商业用途</div>


 </body>

 </html>
 <script type="application/javascript">
     function subLogin(){
      //  alert("xxxxxxxxxxxxx");
         //获取用户填写的账户何密码
        let account = document.getElementById("account").value
         let password = document.getElementById("password").value

         //判断用户填写的账号和密码是否为空
         if("" == account || password == ""){
           //  alert('账号和密码都不能为空');
             document.getElementById("tip").innerHTML = "账号和密码不能为空"
             return
         }
         document.getElementById("tip").innerHTML = ""
         //将用户的账号和密码发送给后端验证是否正确,正确就跳转到系统的首页，错误的话就停在当前页面，并且告诉用户账号或密码错误
            $.ajax({
                url:"login",//后端的请求地址
                type:"POST",//请求方式
                data:{
                    account: account,
                    password: password
                },
                dataType:"text",//后端返回的数据类型
                success:function(res) {//请求完毕的回调函数
                console.log('res',res)
                 if(res == "Y"){
                     //登录成功
                     localStorage.setItem("account",account);
                     //将页面重定直到系统首页
                     window.location.href = "main.html"
                 }else{
                     document.getElementById("tip").innerHTML = "账号或密码错误"
                     return
                 }

         }
         })
            }
 </script>